石斛菌根化组培苗对N素的吸收利用

›› 2007, Vol. 43 ›› Issue (zk): 48-52.

石斛菌根化组培苗对N素的吸收利用

陈连庆王小明裴致达

中国林业科学研究院亚热带林业研究所,富阳311400

收稿日期:2006-04-25 修回日期:1900-01-01 出版日期:2007-10-25 发布日期:2007-10-25

Absorption of N-element in Dendrobium Plants Cultivated from Tissues and Mycorrhized

Chen Lianqing,Wang Xiaoming,Pei Zhida

Research Institute of Subtropical Forestry,CAF Fuyang 311400

Received:2006-04-25 Revised:1900-01-01 Online:2007-10-25 Published:2007-10-25

摘要/Abstract

摘要： 石斛组培苗吸收利用N素营养的研究结果表明:不同N源对菌根化石斛组培苗生长(苗高、茎粗和生物量)的促进效应,以N源酒石酸铵为最好。酒石酸铵N源对石斛菌根真菌F9903菌株菌丝体增殖量也为最大值,所以酒石酸铵堪称两者增殖生长的最佳N源。同时,显示它们之间存在着密切的互动关系。浓度不同的酒石酸铵影响着菌根化石斛苗的生长和N、P、C元素的吸收与积累。方差分析结果表明,2.72mol·L^-1的酒石酸铵是培育菌根化石斛苗的最适宜浓度。

关键词: 石斛, 菌根化, N营养

Abstract: The results of the study on the absorption of N nutrition in the plants of Dendrobium cultured from tissues show that(NH)₂C₄H₄O₆ as N source is the best for promoting the growth(height,diameter of stem and biomass) of the plants which have mycorrhizae.Also,(NH)₂C₄H₄O₆ can promote growth of mycelium of F9903 which is a strain of mycorrhiza of Dendrobium.So,(NH)₂C₄H₄O₆ is a best N source for the propagations of both the plants and the mycorrhiza myceliaum.There is a strong interaction between the plants and their mycorrhizae.Different concentrations of(NH)₂C₄H₄O₆ can effect the growth of Dendrobium plants and absorptions of the mycorrhizae to N,P and C.Through a variance analysis,it has shown that the 2.72 mol·L^-1 of(NH)₂C₄H₄O₆ is the most suitable concentration for culturing plants of Dendrobium.

Key words: Dendrobium, mycorrhized, nitrogen nutrition

陈连庆王小明裴致达. 石斛菌根化组培苗对N素的吸收利用[J]. , 2007, 43(zk): 48-52.

Chen Lianqing;Wang Xiaoming;Pei Zhida. Absorption of N-element in Dendrobium Plants Cultivated from Tissues and Mycorrhized[J]. , 2007, 43(zk): 48-52.